JP2022080339A - container - Google Patents

Abstract

To prevent an inner bag being pulled up from an outer bag when a hermetic seal is peeled from the mouth part of a container which has a container body in which the inner bag is simply in close contact with the outer bag without an adhesive layer.SOLUTION: A container comprises: a container body (2); a cap (3); a passage seal (4) in which a passage port (4a) is formed and adhered to an end surface of a mouth part of the container body; and a hermetic seal (5) that closes the passage port from a surface side of the passage seal and seals the mouth part of the container body. And the container body comprises an outer bag (25) and an inner bag (26), and in a state after discharging contents, the outer bag is restored by its elasticity, and the inner bag is in a contracted state in a body part of the container body while maintaining a state in which the outer bag and the inner bag are in close contact with each other at the mouth part. Adhesive strength between the hermetic seal and the passage seal of the container is weaker than adhesive strength between the passage seal and the mouth part of the container body. When the hermetic seal is peeled, the passage seal covers the mouth part of the container body, and the inner bag cannot be pulled up from the outer bag.SELECTED DRAWING: Figure 1

Description

The present invention relates to a container in which the mouth of the container body is sealed with a sealing seal.

It is known that the mouth of a container body is sealed with a sealing seal typified by aluminum foil in order to keep the freshness of the contents as much as possible. For example, Patent Document 1 discloses a configuration in which the mouth of a container body called a Delami bottle is sealed with a sealing seal called a sealing material. This Delami bottle includes an outer bag called an outer layer, an inner bag that can be peeled off from the outer bag, and an adhesive layer that adheres the outer bag and the inner bag at the mouth. The sealing material includes a metal foil called an aluminum foil and a resin film laminated on the metal foil and adhered to the end surface of the mouth of the container body.

In the above-mentioned Delami bottle of Patent Document 1, in order to prevent the inner bag from being pulled up from the outer bag and peeled off when the sealing seal is peeled off, the sealing strength of the sealing seal is adjusted to the adhesive layer between the inner bag and the outer bag. It is weaker than the force, and the adhesive layer is formed in a range that coincides with at least the pinching direction of the sealing material in the circumferential direction of the mouth. When the seal is peeled off, the adhesive force of the adhesive layer keeps the inner bag and the outer bag integrated at the mouth.

Japanese Unexamined Patent Publication No. 2002-205759

By the way, the Delami bottle (container body) of Patent Document 1 has a structure in which an adhesive layer is provided between the inner bag and the outer bag, but as another example of the container body, it is adhered between the inner bag and the outer bag. There is also a structure that does not have a layer and is only directly bonded (hereinafter referred to as "adhesion").
Since the container body having this close contact structure does not have an adhesive layer as in Patent Document 1, the bonding technique disclosed in Patent Document 1 cannot be applied as it is to bond the sealing seal to the mouth of the container body.
Further, although it is theoretically possible to make the sealing strength of the sealing seal weaker than the adhesive force between the inner bag and the outer bag by applying the adhesive technique disclosed in Patent Document 1, it is technically possible. Is difficult. This is because the adhesive force between the inner bag and the outer bag is extremely weak as compared with the case of Patent Document 1 because there is no adhesive layer.

Further, the Delami bottle of Patent Document 1 includes a range in which the formation range of the adhesive layer coincides with the pinching direction of the sealing seal in the circumferential direction of the mouth portion. This matching range is the range in which the peeling force is first applied when the knob is pulled to peel off the sealing seal. Then, if the formation range of the adhesive layer is set to a range other than the range that matches the pinching direction of the sealing seal, that is, a range different from the pinching direction, the inner bag cannot be pulled up when the sealing seal is peeled off. However, there is a risk that the inner bag and the outer bag will be locally peeled off within the range of the mouth that coincides with the direction of the pinch.

The present invention was created in consideration of the above circumstances, and is a container having a container body in which the inner bag is simply in close contact with the outer bag without an adhesive layer, and the inner bag is at the mouth of the outer bag. The technique disclosed in Patent Document 1 described above is intended for a container that is simply adhered in a direction that coincides with the pinching direction of the sealing seal and is adhered by an adhesive layer in a range different from the pinching direction. A different technique is used to make the inner and outer bags as difficult to peel off as possible at the mouth when the seal is peeled off.

The container of the present invention has a resin container body that is elastically deformable and filled with contents, a cap that has an outlet for the contents and is removable from the mouth of the container body, and the mouth of the container body. A resin passage seal is formed to allow the contents to pass toward the outlet and is adhered to the end face of the mouth of the container body, and the passage port is closed from the surface side of the passage seal to close the mouth of the container body. It is assumed that a sealed seal is provided which is sealed and bonded to the passing seal in a peelable state.
The container body includes an outer bag having recoverable elasticity and an inner bag including an oxygen barrier layer which is superior in oxygen barrier performance to the outer bag and is in close contact with the outer bag at the mouth. In the container body, the outer bag and the inner bag overlap each other when the contents are filled, and when the outer bag is restored due to its elasticity in the state after the contents are discharged, the outer bag and the inner bag are at the mouth. The inner bag contracts at the body of the container while maintaining the close contact.
Moreover, in the container of the present invention, the adhesive strength between the sealing seal and the passing seal is weaker than the adhesive strength between the passing seal and the mouth of the container body.

Further, the container of the present invention is premised on having the above-mentioned container body, cap, passage seal, and sealing seal, and the sealed seal / container body has the following configuration, and the adhesive strength is described above. It may be the same as the configuration.
That is, the sealed seal includes an adhesive layer adhered to the surface side of the passage seal and a metal foil adhered to and integrated with the surface side of the adhesive layer. The metal foil shall include a foil body having an outer shape larger than the outer shape of the mouth of the container book, and a knob protruding from a part of the outer circumference of the foil body.
The main body of the container has an outer bag with recoverable elasticity, an adhesive layer arranged in a range different from that of the outer bag in the circumferential direction, and has better oxygen barrier performance than the outer bag and is picked at the mouth with respect to the outer bag. It is equipped with an inner bag containing an oxygen barrier layer that combines adhesion within the range consistent with the bag and adhesion by an adhesive layer, and when the contents are filled, the outer bag and the inner bag overlap and the contents are discharged. In the later state, when the outer bag is restored due to its elasticity, the inner bag contracts at the body of the container body while maintaining the state where the outer bag and the inner bag are both adhered and adhered at the mouth. Become.
Moreover, in the container of the present invention, the adhesive strength between the sealing seal and the passing seal is weaker than the adhesive strength between the passing seal and the mouth of the container body.

The shape of the passage port does not matter, but if it is assumed that the container body is crushed and used with the cap attached to the container body, the passage seal remains adhered to the end face of the mouth of the container body. It suffices to have the performance that can be achieved, and it is desirable to do the following.
That is, the passage port is shaped to follow the end face of the mouth portion of the container.

Seals and caps are not limited in their detailed configuration. However, in order to adhere the passage seal to the container body, for example, the passage seal may be put on the end face of the mouth of the container body and adhered, but the following may be used.
First, the sealing seal is provided with an adhesive layer adhered to the surface side of the passage seal and a metal foil adhered and integrated to the surface side of the adhesive layer. The cap is a mounting portion attached to the mouth of the container body and a partition portion that projects inward in the radial direction from the mounting portion and separates the inside and the outside of the container body, and is a space on the inner peripheral side thereof. It is provided with a partition portion whose outlet is a portion, and can be attached with a passage seal and a sealing seal sandwiched between the partition portion and the mouth portion of the container body. In addition, a transfer mark indicating contact between the container body and the sealed seal at the time of high-frequency welding is formed on the partition portion.

The container may or may not have other parts as long as it has a container body, a cap, a passage seal, and a sealing seal, but in order to keep the freshness as much as possible until the contents are exhausted, the outside is used. In order to make it easier to keep the inner bag in a contracted state with respect to the bag, it is desirable to do the following.
That is, the container can be opened and closed between the outlet of the cap and the mouth of the container body according to the pressure applied from the container body side, in addition to the container body, the cap, the passage seal, and the sealing seal, and is attached to the partition portion. It is to have a valve.

In the container of the present invention, the adhesive strength between the sealing seal and the passing seal is weaker than the adhesive strength between the passing seal and the mouth of the container body. Therefore, when the cap is removed and the sealing seal is peeled off, the passing seal becomes the container. It will be attached to the mouth of the main body, making it difficult for the inner bag and outer bag to come off at the mouth, and making it difficult for the inner bag to be pulled up from the outer bag.

It is sectional drawing which shows the container of 1st Embodiment of this invention. It is sectional drawing which shows the state which the sealing seal was peeled off from the container of 1st Embodiment. It is a top view which shows the relationship between the passage seal and the mouth part of a container body. It is sectional drawing which shows the state which the contents are taken out from the container body which reduced the contents. It is a top view which shows the relationship between the sealing seal and the mouth part of a container body. It is a bottom view of the cap in an open state. (A) and (b) are perspective views and plan views showing an example of a valve immediately after molding.

As shown in FIG. 1, the container 1 of the first embodiment of the present invention has a container body 2 filled with contents, a cap 3 detachably attached to a mouth portion 22 of the container body 2, and a container body 2. A resin-made pass seal 4 that is adhered to the end face of the mouth portion 22 and allows the contents to pass from the inside in the radial direction from the end face of the mouth portion 22, and the mouth portion 22 of the container body 2 is sealed from the surface side of the pass seal 4. The sealing seal 5 and the valve 6 attached to the cap 3 are provided.

The container body 2 is elastically deformable and is made of a thermoplastic resin. The degree of elastic deformation of the container body 2 is such that the contents can be extruded by crushing by hand. Further, the container body 2 includes a hollow body portion 21 and a tubular mouth portion 22 protruding from a part of the body portion 21 (upper part in the figure). The mouth portion 22 has a cylindrical shape in the present embodiment, and a male screw 23 is formed on the outer peripheral surface thereof for attaching the cap 3. The container body 2 is filled with a viscous substance as a content. Mayonnaise is a typical example of a viscous substance.

Further, the container body 2 has a structure in which the inner bag 26 overlaps the outer bag 25 inside the outer bag 25 in a state where the contents are filled.
The outer bag 25 has recoverable elasticity. On the other hand, the inner bag 26 is superior to the outer bag 25 in oxygen barrier performance (oxygen permeation rate). Further, the inner bag 26 has a structure in which an oxygen barrier layer, an adhesive layer, and an inner layer are laminated in this order from the outside to the inside of the thickness.
The oxygen barrier layer is a layer having an oxygen barrier performance superior to that of the outer bag 25, that is, a layer in which oxygen is difficult to pass through.
The adhesive layer is a layer for adhering the oxygen barrier layer and the inner layer.
The inner layer is a layer having better water resistance than the oxygen barrier layer, that is, a layer that is difficult for water to pass through.
As the material, for example, polyethylene is used for the inner layer and the outer bag 25, and EVOH (ethylene-vinyl alcohol copolymer) is used for the oxygen barrier layer.

Incidentally, the container body 2 is formed by direct blow molding. Therefore, immediately after molding, the outer bag 25 and the inner bag 26 of the container body 2 are in close contact with each other and integrated without a dedicated adhesive layer. Further, the outer bag 25 is formed with an introduction hole 25h for introducing outside air between the outer bag 25 and the inner bag 26 so as to penetrate in the thickness direction. In the figure, the introduction hole 25h is formed on the bottom surface of the outer bag 25. Then, at least once before filling the contents, the container body 2 guides air between the outer bag 25 and the inner bag 26 from the introduction hole 25h, and the outer bag 25 and the inner bag 26 are separated from each other in the body portion 21. The state of being in close contact with the mouth portion 22 is maintained. When the contents are filled, the outer bag 25 and the inner bag 26 are arranged so as to overlap each other in appearance. Further, in the state after the container body 2 is crushed and the contents are discharged, that is, in the state after the contents are discharged, when the outer bag 25 is restored by its elasticity, the outer bag 25 and the inner bag 26 are shown in FIG. The inner bag 26 is in a contracted state in the body portion 21 while maintaining a close contact state in the mouth portion 22, and air is accommodated between the outer bag 25 and the inner bag 26 in the body portion 21. ..

In the following, the terms "container body side", "anti-container body side", and "caliber direction" are used.
The “container body side” is the side where the contents are filled with respect to the object to be attached to the mouth portion 22 of the container body 2, and is the lower side in FIG.
The “anti-container main body side” is the side opposite to the container main body 2, the side where the contents come out with respect to the object, and is the upper side in FIG.
It should be noted that the "container body side" and the "anti-container body side" are used for objects other than the object to be attached to the mouth portion 22.
The "caliber direction" refers to a direction in which a straight line passing through the center of the mouth 22 extends with respect to the center of the mouth 22 when the mouth 22 is viewed from the anti-container body side. Incidentally, in the present embodiment, since the outer peripheral surface and the inner peripheral surface of the mouth portion 22 are both cylindrical, the radial direction coincides with the radial direction.

The cap 3 is a so-called hinge cap in FIGS. 1 and 2. Further, the cap 3 includes an inner lid 7 that is detachably attached to the mouth portion 22 of the container body 2 and has an outlet 3h through which the contents pass, and an outer lid 8 that can be opened and closed with respect to the inner lid 7. Further, the cap 3 includes a connecting portion 3a for connecting the inner lid 7 and the outer lid 8 so as to be openable and closable on the outer peripheral portions thereof. The connecting portion 3a is thinner than the thickness of the mounting portion 71 forming the outer periphery of the inner lid 7 and the thickness of the decorative wall 82 forming the outer periphery of the outer lid 8, and is bendable. The cap 3 is made of a thermoplastic resin.

The inner lid 7 has a mounting portion 71 detachably attached to the outer peripheral surface of the mouth portion 22 of the container main body 2, and the inside of the container main body 2 (container main body side) on the inner peripheral side of the mounting portion 71 on the opposite side of the container main body. It is provided with a partition portion 72 for partitioning the outside (anti-container main body side) and to which the valve 6 is attached.

The mounting portion 71 includes a cylindrical mounting wall 71a and a female screw 71b formed on the inner peripheral surface of the mounting wall 71a. The female screw 71b is screwed into the male screw 23 of the mouth portion 22 of the container body 2.

The partition portion 72 is an annular partition portion main body 73 that projects inward in the radial direction from the entire circumference in the circumferential direction at the end portion of the mounting wall 71a on the anti-container main body side, and the anti-container portion from the inner peripheral portion of the partition portion main body 73. It includes a tubular nozzle portion 74 protruding toward the main body, and a mounting portion 75 formed on the inner surface side (the surface side facing the container main body side) of the partition portion 72 and to which the valve 6 is mounted.

The partition portion main body 73 is an annular plate having a through hole 73a in the central portion when viewed from the anti-container main body side. The partition main body 73 has a tapered shape extending toward the anti-container main body side from the outside in the radial direction toward the inside. Further, the partition portion main body 73 partitions the inside and the outside of the container main body 2 between the through hole 73a and the mounting portion 71. The through hole 73a of the partition portion main body 73 and the internal space of the nozzle portion 74 communicate with each other, and in the present embodiment, an outlet 3h through which the contents pass is formed.
The mounting portion 75 will be described later together with the valve 6.

The outer lid 8 will be described in the closed state. The outer lid 8 includes a decorative plate 81 that covers the inner lid 7 from the anti-container main body side, a tubular decorative wall 82 that extends in the circumferential direction from the outer peripheral portion of the decorative plate 81 and protrudes toward the container main body side, and cosmetics. It is provided with an outer plug 83 that protrudes from the center of the plate 81 toward the container body side and closes the outlet 3h of the inner lid 7. The outer plug 83 has a cylindrical shape and is fitted to the nozzle portion 74 in a state of covering the outer peripheral surface thereof. The decorative wall 82 is in a state of overlapping with the mounting portion 71 on the side opposite to the container body.

As shown in FIGS. 2, 4, and 7, the valve 6 has a valve body 61 that can be opened and closed between the outlet 3h of the cap 3 and the mouth portion 22 of the container body 2 according to the pressure applied from the container body side, and the valve body. It is provided with a flange 62 that projects outward in the radial direction from the outer peripheral portion of 61 and is mounted on the mounting portion 75. The valve 6 is made of elastically deformable resin.

The flange 62 is an annular shape that surrounds the outer circumference of the valve body 61 over the entire circumference. Further, the flange 62 has a flange main body 63 that projects outward in the radial direction from the outer peripheral portion of the valve body 61, and a flange insertion that protrudes from the outer peripheral portion of the flange main body 63 toward the anti-container main body side and is inserted into the mounting portion 75. A unit 64 is provided.

The flange insertion portion 64 has a cylindrical shape.
The flange main body 63 has an annular shape, and more specifically, the outer periphery has a circular shape and the inner circumference has a polygonal shape (regular hexagonal shape). Further, the valve body 61 is joined to the inner peripheral portion of the flange main body portion 63.

The valve body 61 is in a slightly open state immediately after the valve 6 is injection-molded and taken out from the mold. When the valve body 61 is mounted on the mounting portion 75, the valve body 61 is closed. Further, the valve body 61 includes a valve piece group which is a collection of valve pieces 66 extending from each side portion of the polygonal shape on the inner circumference of the flange 62. Further, in the valve body 61, the state in which a gap is formed between the adjacent valve pieces 66 is the open state of the valve body 61, that is, the state in which the valve outlet 6h is open, and the state in which the adjacent valve pieces 66 are in contact with each other. The valve body 61 is closed, that is, the valve outlet 6h is closed. In the closed state of the valve body 61, the valve piece 66 has a triangular shape when viewed from the anti-container body side, and extends from each side of the polygonal shape of the flange 62 toward the center of the polygonal shape. More specifically, in the closed state of the valve body 61, the valve piece 66 projects from each side of the polygonal shape toward the center of the polygonal shape while bulging toward the anti-container main body side in an arc shape. In the closed state, the valve body 61 has a convex shape that swells toward the anti-container body side, more specifically, a hollow shape and a hemispherical shape, and the bottom surface side of the hemispherical shape opens toward the container body side.

The valve piece 66 is elastically deformable. Further, the valve piece 66 includes a first plate portion 66a, a first hinge portion 66b, a second plate portion 66c, and a second hinge portion 66d in order from the tip portion toward the side portion.
The first hinge portion 66b is thinner than the first plate portion 66a and the second plate portion 66c, and serves as a fulcrum for displacing the first plate portion 66a located on the front portion side of itself.
The second hinge portion 66d is thinner than the flange main body portion 63 and the second plate portion 66c, and the front portion side (second plate portion 66c, first hinge portion 66b, first plate portion 66a) of itself is put together. It becomes a fulcrum to be displaced.
When the second plate portion group, which is a set of the second plate portions 66c, is pressed from the anti-container body side, the first plate portion 66a, the first hinge portion 66b, and the second plate portion 66c become fulcrums with the second hinge portion 66d as a fulcrum. It is displaced toward the container body and the valve body 61 is closed. The mounting portion 75 of the cap 3 accommodates the flange inserting portion 64 in a state where the second plate portion group is pressed from the anti-container main body side in this way.

As shown in FIG. 2, the mounting portion 75 accommodates the flange insertion portion 64 and has an accommodating groove 75a that opens toward the container body side, and the accommodating groove 75a protrudes in the width direction and seals the flange 62 on the sealing seal side (reverse). It is provided with a stopper portion 75b that supports from the container body side).

The accommodating groove 75a is a portion that surrounds the cylindrical space portion from the inside and outside in the radial direction and from the anti-container main body side, and is an outer guide portion 76 arranged at intervals on the outer and inner sides in the radial direction of the partition portion main body 73. The inner guide portion 77 is formed by a portion of the partition portion main body 73 that joins the outer guide portion 76 and the inner guide portion 77 in the radial direction from the anti-container main body side.

The outer guide portion 76 includes a cylindrical outer wall 76a and a stopper portion 75b that protrudes inward in the radial direction from the end portion of the outer wall 76a on the container body side.
The inner peripheral surface of the outer wall 76a is in a state of being along the outer peripheral surface of the flange insertion portion 64.
The stopper portion 75b is annular and is arranged at the end portion on the container main body side with respect to the flange main body portion 63.

The inner guide portion 77 includes a tubular inner wall 77a and a guide piece 77b that protrudes outward in the radial direction from the outer peripheral surface of the inner wall 77a and is arranged at intervals in the circumferential direction. The outer peripheral surface of the inner wall 77a is in a state of being spaced from the inner peripheral surface of the flange insertion portion 64, and the outer peripheral surface of the guide piece 77b is in a state of being along the inner peripheral surface of the flange insertion portion 64.

Both the outer wall 76a and the inner wall 77a extend from the inner surface (the surface on the container body side) of the partition body 73 toward the container body side. The position of the extended end surface (the surface facing the container body side) is such that the inner wall 77a is on the anti-container body side as compared with the outer wall 76a. The end surface of the inner wall 77a is a surface that presses the second plate portion 66c of the valve 6 from the anti-container body side. On the other hand, the end surface of the outer wall 76a is a surface that presses the sealing seal 5 from the anti-container body side. Further, the end surface of the outer wall 76a is in a state of projecting in the radial direction with respect to the end portion of the mounting portion 71 on the side of the anti-container main body. A sealing seal 5 and a passing seal 4 are sequentially arranged on the container body side with respect to the end surface of the outer wall 76a, and are sandwiched between the outer wall 76a and the mouth portion 22 of the container body 2.

The passage seal 4 has an annular shape, and the outer peripheral portion of the annular shape is adhered to the end surface of the mouth portion 22 of the container body 2. Further, the inner peripheral surface of the annular shape of the passage seal 4 becomes the passage port 4a, and the passage port 4a allows the contents to pass from the mouth portion 22 of the container body 2 toward the outlet 3h. Further, the passage port 4a has a shape along the end surface of the mouth portion 22 of the container main body 2, and in the present embodiment, it has a circular shape as shown in FIG. The pass-through seal 4 has a laminated structure, and the main body layer and the main body layer, which are the main body for securing the shape of the pass-through seal 4, are adhered to the mouth portion 22 of the container main body 2 to ensure the sealing property (airtightness / watertightness). It is provided with a sealing layer for the purpose. For the sealing layer, for example, linear low-density polyethylene is used. If the melting points are arranged from the highest, the main body and the seal layer are in that order. Incidentally, the main body layer has a laminated structure in this example, and is provided with a plurality of resin layers.

The sealing seal 5 closes the passing port 4a from the surface side (anti-container main body side) of the passing seal 4, seals the mouth portion 22 of the container main body 2, and is adhered to the passing seal 4 in a peelable state. Further, the sealing seal 5 includes an adhesive layer bonded to the surface side of the passing seal 4 and a metal foil (for example, an aluminum foil) bonded and integrated to the surface side of the adhesive layer. As long as the sealing seal 5 includes the metal foil and the adhesive layer, another layer may be provided between the metal foil and the adhesive layer or on the surface side of the metal foil.
As the adhesive layer, for example, a single substance or a mixture of vinyl resin, urethane resin, acrylic resin, polyamide resin, silicon resin and the like is used.
As shown in FIG. 5, the metal foil includes a foil body 5a having an outer shape larger than the outer shape of the mouth portion 22 of the container body 2, and a knob 5b protruding from a part of the outer circumference of the foil body 5a.
An adhesive layer is formed on at least the outer peripheral portion of the back surface (the surface on the container body side) of the foil body 5a, and the passage seal 4 is adhered to the adhesive layer.

The adhesive strength between the sealed seal 5 and the passing seal 4 (that is, the adhesive strength due to the adhesive layer) is weaker than the adhesive strength between the passing seal 4 and the mouth portion 22 of the container body 2 (that is, the adhesive strength due to the sealing layer). There is. Further, the sealing seal 5 and the passing seal 4 are adhered by an adhesive layer before being adhered to the container main body 2 to form a single sealing material.

The sealing material is adhered to the mouth portion 22 of the container body 2 by high frequency welding, and more specifically, it is welded. High frequency welding is performed as follows 1) to 4).
1) First, the valve 6 is attached to the cap 3. More specifically, the flange insertion portion 64 of the valve 6 is inserted into the accommodating groove 75a of the mounting portion 75 of the cap 3, and the stopper portion 75b prevents the valve 6 from falling from the cap 3 by its own weight and not coming off.
2) Next, the sealing material is incorporated into the cap 3. More specifically, the sealing material is pushed into the back side (anti-container body side) of the tubular mounting portion 71 of the cap 3, and the foil body 5a on the metal leaf side of the sealing seal 5 is placed on the end surface of the outer wall 76a. While pressing, the knob 5b is bent along the inner surface of the mounting portion 71, and the sealing material is temporarily fixed to the cap 3.
3) After that, the valve 6 and the cap 3 in which the sealing material is incorporated are attached to the mouth portion 22 of the container body 2 filled with the contents. More specifically, the female screw 71b of the cap 3 and the male screw 23 of the mouth portion 22 of the container body 2 are screwed together, and the cap 3 is rotated relative to the mouth portion 22 of the container body 2 to partition the container body 2. A sealing material is sandwiched between the portion 72 (the end surface of the outer wall 76a) and the end surface of the mouth portion 22 of the container body 2.
4) Finally, the container 1 filled with the contents is installed in a high-frequency welding device (high-frequency induction heating device), and the sealing material and the end face of the mouth portion 22 of the container body 2 are high-frequency welded from the outside of the cap 3. Then, the sealing seal 5 (metal leaf) of the sealing material is heated by the high frequency, the sealing layer of the passing seal 4 is melted and adheres to the end surface of the mouth portion 22 of the container body 2, and the outer wall 76a of the partition portion 72 is formed. It melts and the delicate unevenness of the surface of the metal foil and the outer shape of the metal foil are transferred to the end face of the outer wall 76a of the partition portion 72. That is, as shown in FIG. 6, a transfer mark 72a indicating contact between the container body 2 and the sealed seal 5 at the time of high frequency welding is formed on the partition portion 72. Further, as shown in FIGS. 5 and 6, the outer shape of the transfer mark 72a is a distorted circular shape in the figure, which coincides with the outer shape of the metal foil. Further, streaks 72c showing unevenness are formed on the surface of the transfer trace 72a, and streaks 5c showing unevenness are also formed on the surface of the metal foil.

The container 1 of the first embodiment of the present invention adopts a configuration in which the passage seal 4 is interposed between the sealing seal 5 and the mouth portion 22 of the container body 2, and passes through the adhesive strength between the sealing seal 5 and the passing seal 4. Since the adhesive strength between the seal 4 and the mouth portion 22 of the container body 2 is weaker, when the cap 3 is removed and the sealed seal 5 is pulled up, the boundary between the adhesive layer of the sealed seal 5 and the main body layer of the passing seal 4 The sealing seal 5 is peeled off, and the passing seal 4 is attached to the mouth portion 22 of the container body 2. The inner bag 26 and the outer bag 25 are hard to be peeled off at the mouth portion 22, and the inner bag 26 is attached to the outer bag 25. It becomes difficult to be pulled up from.
Further, since the container 1 of the first embodiment of the present invention is provided with a valve 6 in addition to the container body 2, the cap 3, the sealing seal 5, and the passage seal 4, if the container body 2 is crushed by hand, the contents are contained. In response to the pressure, the tip of the valve piece 66 is displaced toward the anti-container body side with the first hinge portion 66b as a fulcrum, the valve body 61 is opened, and the contents pass through the mouth portion 22 of the container body 2. It will be discharged to the outside through the mouth 4a, the valve outlet 6h, and the outlet 3h.
Moreover, if the container body 2 is crushed by hand and then the hand is released from the container body 2, the valve piece 66 is restored to its original shape, the valve body 61 is closed, and the outer bag 25 is returned to its original shape due to its elasticity. Air is guided between the outer bag 25 and the inner bag 26 from the introduction hole 25h, and the inner bag 26 keeps the outer bag 25 and the inner bag 26 in close contact with each other at the mouth portion 22. Is in a contracted state in the body portion 21 of the container body 2. Then, the closed valve 6 works to maintain the contracted state of the inner bag 26.

The container 1 of the present invention is not limited to the above embodiment, and can be appropriately changed as long as it does not deviate from the gist thereof. For example, the valve 6 was one of the parts of the container 1 in the above embodiment, but the present invention is not limited to this, and the valve 6 may be omitted. Further, the valve 6 has a plurality of valve pieces 66 that open and close in the above embodiment, but the present invention is not limited to this, and a slit through which the contents pass is formed in the elastically deformable plate-shaped film. It may be a thing.

Further, in the above embodiment, the container 1 has a configuration in which the outer bag 25 and the inner bag 26 are in close contact with each other over the entire circumference in the circumferential direction of the mouth portion 22, but the present invention is not limited to this, and the container 1 is not limited to this. The inner bag 26 may be in close contact with the mouth portion 222 in a part of the entire circumference in the circumferential direction, and may be adhered by an adhesive layer made of an adhesive in the remaining range. However, in this case, in the mouth portion 22, the outer bag 25 and the inner bag 26 are in close contact with each other in the range corresponding to the knob 5b of the sealing seal 5, and the other range (the range different from the knob 5b in the circumferential direction). At least a part of them is configured to have an adhesive layer.

1 Container 2 Container body 21 Body 22 Mouth 23 Male screw 25 Outer bag 25h Introductory hole 26 Inner bag 3 Cap 3a Connecting part 3h Outlet 4 Passing seal 4a Passing port 5 Sealing seal 5a Foil body 5b Picking 5c Muscle 6 valve 6h Valve outlet 61 Valve body 62 Flange 63 Flange body part 64 Flange insertion part 66 Valve piece 66a First plate part 66b First hinge part 66c Second plate part 66d Second hinge part 7 Inner lid 71 Mounting part 71a Mounting wall 71b Female screw 72 Partition 72a Transfer trace 72c Reinforcement 73 Partition body 73a Through hole 74 Nozzle 75 Mounting 75a Storage groove 75b Stopper 76 Outer guide 76a Outer wall 77 Inner guide 77a Inner wall 77b Guide piece 8 Outer lid 81 Decorative plate 82 Wall 83 outer plug

Claims (5)

A resin container body that is elastically deformable and filled with contents, a cap that has an outlet for the contents and is removable at the mouth of the container body, and the contents from the mouth of the container body to the outlet. A resin passage seal that is formed and adhered to the end face of the mouth of the container body, and a passage seal that closes the passage port from the surface side of the passage seal to seal the mouth of the container body and also as a passage seal. On the other hand, it is equipped with a seal that is bonded in a peelable state.
The main body of the container is provided with an outer bag having recoverable elasticity and an inner bag having an oxygen barrier performance superior to that of the outer bag and having an oxygen barrier layer in close contact with the outer bag at the mouth, and is filled with the contents. In the state where the outer bag and the inner bag overlap, and in the state after the contents are discharged, when the outer bag is restored due to its elasticity, the outer bag and the inner bag are maintained in close contact with each other at the mouth. The bag is in a contracted state at the body of the container,
A container characterized in that the adhesive strength between the sealing seal and the passing seal is weaker than the adhesive strength between the passing seal and the mouth of the container body. A resin container body that is elastically deformable and filled with contents, a cap that has an outlet for the contents and is removable at the mouth of the container body, and the contents from the mouth of the container body to the outlet. A resin passage seal that is formed and adhered to the end face of the mouth of the container body, and a passage seal that closes the passage port from the surface side of the passage seal to seal the mouth of the container body and also as a passage seal. On the other hand, it is equipped with a seal that is bonded in a peelable state.
The sealing seal comprises an adhesive layer bonded to the surface side of the pass seal and a metal foil bonded and integrated to the surface side of the adhesive layer.
The metal foil has a foil body whose outer shape is larger than the outer shape of the mouth of the container book, and a knob that protrudes from a part of the outer circumference of the foil body. Due to the adhesive layer arranged in a range different from the pinch in the circumferential direction, and the adhesion and adhesive layer in the range that has better oxygen barrier performance than the outer bag and matches the pinch at the mouth of the outer bag. It is equipped with an inner bag containing an oxygen barrier layer used in combination with adhesion, and the outer bag and the inner bag overlap each other when the contents are filled, and the outer bag is restored by its elasticity in the state after the contents are discharged. In some cases, the inner bag contracts at the body of the container while maintaining the state where the outer bag and the inner bag are both adhered and adhered at the mouth.
A container characterized in that the adhesive strength between the sealing seal and the passing seal is weaker than the adhesive strength between the passing seal and the mouth of the container body. The container according to claim 1 or 2, wherein the passage port has a shape along the end face of the mouth portion of the container. The sealing seal comprises an adhesive layer bonded to the surface side of the pass seal and a metal foil bonded and integrated to the surface side of the adhesive layer.
The cap is a partition between the mounting portion attached to the mouth of the container body and the partitioning portion that protrudes inward in the radial direction from the mounting portion and separates the inside and the outside of the container body, and is a space portion on the inner peripheral side thereof. It is equipped with a partition that serves as an outlet, and can be installed with the passage seal and the sealing seal sandwiched between the partition and the mouth of the container body.
The container according to claim 1, 2 or 3, wherein a transfer mark indicating contact between the container body and the sealed seal at the time of high-frequency welding is formed on the partition portion. The container according to claim 4, wherein the container can be opened and closed between the outlet of the cap and the mouth of the container body according to the pressure applied from the container body side, and is provided with a valve attached to the partition portion.

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